package org.shiwen.week9;

public interface Interface1 {
    public void test();
}

abstract class AbstractClass1 {
    public abstract void show();
}

abstract class SubClass1 extends AbstractClass1 implements Interface1{

}

class SubClass2 extends SubClass1{
    @Override
    public void show() {
        System.out.println("show");
    }

    @Override
    public void test() {

    }
}
//alt+enter可以查看报错解决方法

